Sia performs Rihanna’s smash ‘Diamonds’

It’s no secret that the Rihanna smash ‘Diamonds‘ was co-written by Australian parttime singer songwriter Sia. Rihanna’s ‘interpretation‘ stays very close to Sia’s vocal intonation. To see how close, check out Sia’s performance of Rihanna’s smash ‘Diamonds’ at the Norwegian-American Achievement Award, where she performed the track with her co-writers, the Norwegian production team Stargate.